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Open AccessArticle

On the Influence of the Main Floor Layout of Buildings in Economic Flood Risk Assessment: Results from Central Spain

Department of Geodynamics, Stratigraphy and Paleontology, Complutense University of Madrid, E-28040 Madrid, Spain
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Water 2020, 12(3), 670; https://doi.org/10.3390/w12030670
Received: 30 December 2019 / Revised: 31 January 2020 / Accepted: 26 February 2020 / Published: 1 March 2020
(This article belongs to the Special Issue Flood Risk Assessments: Applications and Uncertainties)
Multiple studies have been carried out on the correct estimation of the damages (direct tangible losses) associated with floods. However, the complex analysis and the multitude of variables conditioning the damage estimation, as well as the uncertainty in their estimation, make it difficult, even today, to reach one single, complete solution to this problem. In no case has the influence that the topographic relationship between the main floor of a residential building and the surrounding land have in the estimation of flood economic damage been analysed. To carry out this analysis, up to a total of 28 magnitude–damage functions (with different characteristics and application scales) were selected on which the effect of over-elevation and under-elevation of the main floor of the houses was simulated (at intervals of 20 cm, between −0.6 and +1 metre). According to each of the two trends, an overestimation or underestimation of flood damage was observed. This pattern was conditioned by the specific characteristics of each magnitude–damage function, meaning that the percentage of damage became asymptotic from a certain flow depth value. In a real scenario, the consideration of this variable (as opposed to its non-consideration) causes an average variation in the damage estimation around 30%. Based on these results, the analysed variable can be considered as (1) another main source of uncertainty in the correct estimation of flood damage, and (2) an essential variable to take into account in a flood damage analysis for the correct estimation of loss. View Full-Text
Keywords: floods; economic damage; building first floor; magnitude–damage models; Navaluenga floods; economic damage; building first floor; magnitude–damage models; Navaluenga
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MDPI and ACS Style

Garrote, J.; Bernal, N. On the Influence of the Main Floor Layout of Buildings in Economic Flood Risk Assessment: Results from Central Spain. Water 2020, 12, 670. https://doi.org/10.3390/w12030670

AMA Style

Garrote J, Bernal N. On the Influence of the Main Floor Layout of Buildings in Economic Flood Risk Assessment: Results from Central Spain. Water. 2020; 12(3):670. https://doi.org/10.3390/w12030670

Chicago/Turabian Style

Garrote, Julio; Bernal, Nestor. 2020. "On the Influence of the Main Floor Layout of Buildings in Economic Flood Risk Assessment: Results from Central Spain" Water 12, no. 3: 670. https://doi.org/10.3390/w12030670

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